A new approach based on convolutional neural network (CNN) technology is proposed for efficient inverse design of nozzle that can be designed according to the required pressure distribution. The regularization term is proposed to improve the smoothness of the nozzle configuration generated by the CNN. Firstly, the details of CNN technology are introduced. Secondly, the details of the numerical method are presented, including code validation and gird resolution study. Thirdly, the nozzle dataset is obtained using the design of experiments method. Then, the regularization for nozzle contour smoothness is considered and the weight of the regularization term is discussed. Finally, the nozzle cases are predicted to show the effectiveness of the proposed model. The results show that the proposed model can obtain the required nozzle configuration accurately, and the mean square error and mean absolute error are and , respectively. Besides, the smoothness of the nozzle configuration can be improved using the proposed regularization term in the training process. The average relative errors between the required and predicted pressure distribution are less than 10% under satisfying smoothness. Therefore, the nozzle configuration can be predicted using the proposed model under the required pressure distribution.
Inverse Design of Nozzle Using Convolutional Neural Network
Journal of Spacecraft and Rockets ; 59 , 4 ; 1161-1170
2022-07-01
Article (Journal)
Electronic Resource
English
Inverse Problems for Advanced Nozzle Design
AIAA | 2004
|Inverse Problems for Advanced Nozzle Design
British Library Conference Proceedings | 2004
|An Adjoint Method for Controlled Cavitation Inverse Nozzle Design
British Library Conference Proceedings | 2005
|